| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hdfs.server.blockmanagement; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.protocol.Block; |
| import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager; |
| import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor; |
| import org.apache.hadoop.hdfs.server.common.GenerationStamp; |
| import org.apache.hadoop.hdfs.server.namenode.FSNamesystem; |
| |
| /** |
| * Test if FSNamesystem handles heartbeat right |
| */ |
| public class TestComputeInvalidateWork extends TestCase { |
| /** |
| * Test if {@link FSNamesystem#computeInvalidateWork(int)} |
| * can schedule invalidate work correctly |
| */ |
| public void testCompInvalidate() throws Exception { |
| final Configuration conf = new HdfsConfiguration(); |
| final int NUM_OF_DATANODES = 3; |
| final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(NUM_OF_DATANODES).build(); |
| try { |
| cluster.waitActive(); |
| final FSNamesystem namesystem = cluster.getNamesystem(); |
| final BlockManager bm = namesystem.getBlockManager(); |
| final int blockInvalidateLimit = bm.getDatanodeManager().blockInvalidateLimit; |
| DatanodeDescriptor[] nodes = |
| namesystem.heartbeats.toArray(new DatanodeDescriptor[NUM_OF_DATANODES]); |
| assertEquals(nodes.length, NUM_OF_DATANODES); |
| |
| namesystem.writeLock(); |
| try { |
| for (int i=0; i<nodes.length; i++) { |
| for(int j=0; j<3*blockInvalidateLimit+1; j++) { |
| Block block = new Block(i*(blockInvalidateLimit+1)+j, 0, |
| GenerationStamp.FIRST_VALID_STAMP); |
| bm.addToInvalidates(block, nodes[i]); |
| } |
| } |
| |
| assertEquals(blockInvalidateLimit*NUM_OF_DATANODES, |
| bm.computeInvalidateWork(NUM_OF_DATANODES+1)); |
| assertEquals(blockInvalidateLimit*NUM_OF_DATANODES, |
| bm.computeInvalidateWork(NUM_OF_DATANODES)); |
| assertEquals(blockInvalidateLimit*(NUM_OF_DATANODES-1), |
| bm.computeInvalidateWork(NUM_OF_DATANODES-1)); |
| int workCount = bm.computeInvalidateWork(1); |
| if (workCount == 1) { |
| assertEquals(blockInvalidateLimit+1, bm.computeInvalidateWork(2)); |
| } else { |
| assertEquals(workCount, blockInvalidateLimit); |
| assertEquals(2, bm.computeInvalidateWork(2)); |
| } |
| } finally { |
| namesystem.writeUnlock(); |
| } |
| } finally { |
| cluster.shutdown(); |
| } |
| } |
| } |